*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family:Arial, sans-serif;
    line-height:1.6;
    color:#222;
}

.container{
    width:90%;
    max-width:1200px;
    margin:auto;
}

header{
    /* background:#0f2f4f; */
	background:#4a90e2;
    position:sticky;
    top:0;
    z-index:100;
}

.logo{
    color:white;
    font-size:2.0rem;
    font-weight:bold;
}

.nav{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:15px 0;
}

nav{
    display:flex;
    align-items:center;
    gap:20px;
}

nav a{
    color:white;
    text-decoration:none;
}

.btn-nav{
    background:#2e7d32;
    padding:10px 18px;
    border-radius:8px;
}

#hamburger{
    display:none;
    color:white;
    font-size:2rem;
    cursor:pointer;
}

.hero{
    background:#f5f8fb;
    min-height:90vh;
    display:flex;
    align-items:center;
}

.hero-content{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:50px;
    align-items:center;
}

.hero h1{
    font-size:3rem;
    margin-bottom:20px;
}

.hero p{
    margin-bottom:30px;
    font-size:1.1rem;
}

.cta-btn{
    display:inline-block;
    background:#2e7d32;
    color:white;
    text-decoration:none;
    padding:15px 30px;
    border-radius:10px;
    font-size:1.1rem;
    transition:0.3s;
}

.cta-btn:hover{
    background:#256628;
    transform:translateY(-2px);
}

.mockup{
    height:450px;
    background:white;
    border-radius:16px;
    overflow:hidden;
    box-shadow:0 10px 30px rgba(0,0,0,0.1);
}

.mockup img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
}

.hero-link{
    display:block;
}

.hero-link .mockup{
    transition:transform 0.3s ease,
               box-shadow 0.3s ease;
}

.hero-link:hover .mockup{
    transform:scale(1.03);
    box-shadow:
        0 20px 60px rgba(0,0,0,0.18),
        0 10px 25px rgba(0,0,0,0.12);
}

.features{
    padding:80px 0;
}

.features h2{
    text-align:center;
    margin-bottom:40px;
}

.cards{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:25px;
}

.card{
    background:white;
    padding:25px;
    border-radius:15px;
    box-shadow:0 4px 20px rgba(0,0,0,.08);
}

.help{
    background:#f5f8fb;
    padding:80px 0;
}

.help h2{
    text-align:center;
    margin-bottom:40px;
}

.steps{
    display:flex;
    justify-content:center;
    gap:30px;
    flex-wrap:wrap;
}

.step{
    background:white;
    padding:30px;
    border-radius:15px;
    min-width:220px;
    text-align:center;
    box-shadow:0 4px 20px rgba(0,0,0,.08);
}

.step span{
    display:block;
    font-size:2rem;
    color:#2e7d32;
    font-weight:bold;
}

.external-step{
    width:100%;
    max-width:900px;

    background:#eef6ff;
    border:2px dashed #4a90e2;
    border-radius:15px;

    padding:30px;
    text-align:center;

    color:#222;

    box-shadow:0 4px 20px rgba(0,0,0,.08);
}

.external-step span{
    display:inline-flex;
    align-items:center;
    justify-content:center;

    width:52px;
    height:52px;

    border-radius:50%;

    background:#4a90e2;
    color:white;

    font-size:1.8rem;
    font-weight:bold;

    margin-bottom:15px;
}

.external-title{
    font-size:.85rem;
    text-transform:uppercase;
    letter-spacing:.08em;
    color:#4a90e2;
    font-weight:bold;
    margin-bottom:15px;
}

#contact{
    padding:80px 0;
    text-align:center;
}

footer{
    background:#4a90e2;
    color:white;
    text-align:center;
    padding:20px;
}

.app-page{
    padding:50px 0;
}

.app-frame{
    width:100%;
    height:900px;
    border:none;
    border-radius:12px;
    box-shadow:0 4px 20px rgba(0,0,0,.1);
}

@media(max-width:768px){

    #hamburger{
        display:block;
    }

    nav{
        display:none;
        flex-direction:column;
        position:absolute;
        top:70px;
        right:10px;
        background:#0f2f4f;
        padding:20px;
        border-radius:10px;
    }

    nav.active{
        display:flex;
    }

    .hero-content{
        grid-template-columns:1fr;
        text-align:center;
    }

    .hero h1{
        font-size:2.2rem;
    }

    .cards{
        grid-template-columns:1fr;
    }
}

.sources{
    padding:80px 0;
    background:white;
}

.sources h2{
    text-align:center;
    margin-bottom:20px;
}

.sources-intro{
    max-width:800px;
    margin:0 auto 40px;
    text-align:center;
    color:#555;
}

.sources-table-wrapper{
    overflow-x:auto;
    margin-top:40px;
}

.sources-table{
    width:100%;
    border-collapse:collapse;
    table-layout:fixed;
    background:white;
    border:1px solid #d9e2ec;
}

.sources-table th,
.sources-table td{
    border:1px solid #d9e2ec;
    padding:14px 16px;
    text-align:left;
    vertical-align:top;
}

.sources-table th{
    background:#4a90e2;
    color:white;
    font-weight:600;
}

.sources-table tbody tr:nth-child(even){
    background:#f8fafc;
}

.sources-table tbody tr:hover{
    background:#eef5ff;
}

.sources-table th:nth-child(1),
.sources-table td:nth-child(1){
    width:35%;
}

.sources-table th:nth-child(2),
.sources-table td:nth-child(2){
    width:20%;
}

.sources-table th:nth-child(3),
.sources-table td:nth-child(3){
    width:20%;
}

.sources-table th:nth-child(4),
.sources-table td:nth-child(4){
    width:25%;
}

@media(max-width:768px){

    .sources-table th,
    .sources-table td{
        padding:10px;
        font-size:0.9rem;
    }

}

.sources-description {
    margin-top: 25px;
    font-size: 14px;
    line-height: 1.6;
    color: #444;
}

.sources-description h3 {
    margin-bottom: 10px;
    color: #1565c0;
}

.sources-description ul {
    padding-left: 20px;
}

.sources-description li {
    margin-bottom: 8px;
}

.license-box{
    margin-top:50px;
    background:#f5f8fb;
    padding:30px;
    border-radius:15px;
    border-left:5px solid #2e7d32;
}

.license-box h3{
    margin-bottom:15px;
}

.legal-page{
    padding:80px 0;
    background:#fff;
}

.legal-page h1{
    margin-bottom:20px;
}

.legal-page h2{
    margin-top:40px;
    margin-bottom:15px;
    color:#2e7d32;
}

.legal-page p{
    margin-bottom:15px;
}

.legal-page ul{
    margin-left:25px;
    margin-bottom:20px;
}

.legal-page li{
    margin-bottom:8px;
}

.legal-page strong{
    color:#222;
}

footer a{
    color:white;
    text-decoration:none;
}

footer a:hover{
    text-decoration:underline;
}